A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6320-01-607-1491
NSN 6150-00-479-2976
NSN 6650-00-617-7573
NSN 5950-01-299-7049
NSN 5920-00-018-1452
NSN 5855-01-223-0833
NSN 6135-00-995-1089
NSN 5975-00-461-3097
NSN 6150-01-423-7763
NSN 5895-01-613-3031
NSN 7035-00-973-9215
NSN 6650-00-658-9627